Get attribute specif price

[Cenzy]

Hi everyone, I'm new with Prestashop and I'm fighting with a problem.

I've a combination of three attribute. I want display below the 3rd attribute the total price if the user clicked there. 

I went to 'product.js' but is too complicate to me understanding that code. There's a documentation of that? About my problem: advice?

 

Sorry for my bad english I'm also  new with it.

Edited November 19, 2016 by Cenzy (see edit history)